Automatic chase-locking device.



APPLICATION FILED MAR. 26.19I2.

Patented Dec. 7, 1915.

2 SHEETS-SHEET I.

cfs. HAYES.

AUTOMATIC CHASE LOCKING DEVICE.

APPLICATION FILED MAR.26. I912. LWQQQU. Patented Dec. 7,1915.

- 2 SHEETS-SHEET 2.

Wwiiemw ill CHARLES S. HAYES, OF PLAINFIELD, NEW JERSEY, ASSIGNOR TO AMERICAN HIGH SPEED PRESS GOMPANY, OF NEW YORK, N. Y., A CORPORATION OF NEW YORK.

AUTOMATIC CHASE-LOCKING DEVICE.

Specification of Letters Patent.

Patented Dec. "2, 1915.

of New Jersey, have invented a new and low] useful Automatic Chase-Locking 'Device, of which the following is a specification.

The principal objects of this invention are to provide means whereby the chase hook on bed and platen job presses can be locked open by hand, but will be automatically and positively locked open if the operator happens to forget to lock it when taking the chase from the press; and toprovide a construction in. which when the chase is re moved the parts are necessarily left in a position ready to cushion a new chase when inserted.

The invention also involves improvements in details of construction and combinations of parts as will appear hereinafter.

Reference is to be had to the accompanying drawings. in which Figure 1 is a vertical sectional view of a portion of a bed and platen job press showing a preferred form of this invention applied thereto and illustrating the chase locked in position; Fig. 2 is a similar View showing the chase in an unlocked position ready to be automatically locked by the op eration of the press; Fig. 3 is a plan of Fig. 1.; and Fig. ft is a front view. 7

The invention is illustrated as applied to that type of printing press in which the type-bed moves forward and backward toward and from the platen and it is designed to be arranged in such a way that'any ordinary form of lower chase hook can be emploved and yet the upper hook will be capable of moving as far as necessary to clamp the chase in position on the type-bed. For the purposes stated the chase hook is pro; vided with a positive locking device for looking it in open position so that the resilient means cannot operate until the looking device is released, which is done as previously stated by the movement of the chase itself up against the bed.

The invention is shown as applied to a bed and platen job press comprising a type bed 10 mounted on a supporting member or framev 11. The chase A is shown as supported at the bottom by an adjustable lower hook 12. The chase canbe adjusted up and down by this hook by means of a screw 13 which passes through a boss thereon and engages a surface on the frame 11. It will be understood of course that any desired form. of supporting means for the chase can be used in this place.

At the upper end the chase is shown as being held by means of an upper chase hook 14 having a relatively fixed handle thereon. This handle is adapted to be held up by a spring 15 on a spring rod 16 connected with the handle and passing through a suitable projection 17 on the frame. This spring acts between the projection 17 and a collar 18 on the spring rod 16 and causes the handle end of the hook 14 to be moved upward and the hook end downward about the pivot 19 until the chase is locked thereby. This pivot or stud 19 is carried by projections 20 on "the type bed 10. Carried on a stud 21 mounted on the hook 14: is a link 22 having a toe 22 adapted to come in contact with the back of the bed 10 as shown in Fig. 2. Carried on a puppet 23 by means of a stud 24s is a lower link 25 which is pivoted to the link 22 at 26, so that these parts constitute a toggle. Pivotally connected with these links at the same point 26, is a rod 27 This rod has one end rounded, and adapted to project through a perforation in the bed 10. The 'other'end passes through a stop 28 fixed on a bracket 29 shown as mounted on the frame 11. Mounted on the rod 27 is a spring 30 which acts between the stop 28 and a collar 31 on the rod 27. This tends to push the rod 27 forward toward the chase and project its end through the perforation for the purpose of separating the chase from the bed. The usual form rolls 33 are indi cated in position in Fig. .2.

The operation of the device is as follows: The chase being in position on the bed as shown in F 1, the lowering of the handle of the hook 14: not only raises the hook from the edge of the chase so as to release it, but it also results in straightening out the toggle formed by the links 22 and 25 to bring the parts into the position shown in Fig. 2. This forces the rod 27 forward and forces the upper end of the chase from the type bed. On account of the toggle being straightened out it will be obvious that the spring 15 cannot return the hook 141 to clamping position, and this hook therefore is locked in open position for the time being. Now the chase having been loosened,

it can be removed and it will be seen that the parts are left in proper position to receive a new chase, except that the projecting end of the rod 27 is in the way of the chase coming clear up to closed position. Now if the operator inserts the chase properly on the hook 12' he can lock it in position by hand by forcing its upper end inwardly against the rod '27 so as to unlock the upper hook by breaking the toggle. This permits the spring 15 to. force the up per hookdown into locking position. If, however, he places the chase in position and forgets to lock it, the operation of the rolls 33 on the chase obviously will have the same effect so that the chase can be locked either by hand or automatically, and the automatic operation is a positive one which is certain to take place if the operator forgets to lock the chase by hand. It will be obvious also that the upper hook 141 is adapted to engage and hold the chase in any position between the extreme open position of the upper hook and its lowest position in which the hook can come into contact with the topof the type bed 10. This is due to the fact that the hook is spring-pressed and is responsible for an attendant advantage, namely, that it will work effectually for the purpose intended, substantially independently of the adjustment of the lower hook 12.

Although I have illustrated, and described only a single form of the invention andshown it as applied only to a single type of press, I am aware that many modifications can be made in the form shown, and that it can be applied to other types of presses without departing from the princi-- vple or scope of the invention as expressed in the claims. Therefore I do not wish to be limited to all the details of construction, or'the particular form of press herein shown and described, but

What I do claim is 1; In a printing press, the combination with thetype bed, and a locking hook for the chase thereon, of yielding means connected with said hook for moving the hook to open position and automatically locking it in open position when it is opened, and resilient means for moving the hook back to aposition for locking the chase.

2. In a printing press, the combination with the type bed, of a locking hook thereon for the chase, a handle on the hook for operating it directly, a toggle connected with said hook for holding it positively locked in open position, a reciprocating member connected with the toggle for moving it to open position, and a spring on said reciprocating member for holding the toggle in its straightened condition, said movable member having a projection thereon adapted to extend into the path of the chase, whereby the movement oi the chase against the bed will break the toggle against the resistance 0 said spring and allow the hook to be moved into operative position.

3. In a printing press, the combination with the type bed, of a pivoted locking hook thereon for the chase, a toggle connected with said hook for holding it locked in open position, one of the members of the toggle having a stop thereon for limiting the motion of the toggle longitudinally, a movable rod pivotally connected with the joint of the toggle for operating it and having a projection thereon adapted to extend into the path of the chase, and resilient means tending to move the rod into operative position.

a. In a printing press, the combination with a type bed and a locking hook for the chase, of yielding means connected with the hook for releasing the edge of the chase from the type bed and for locking the releasing means and hook in a position in which the hook is open and the releasing means projects through the type bed.

' In testimony whereof I have hereunto set my hand, in the presence of two subscribing witnesses.

CHARLES S. HAYES.

A VVit-nesses:

WM. H. HoNIss,

CAROLINE M. BRECKLE.

Gopiesof this patent may be obtained for five cents each, by addressing the Commissioner of Patents. Washington, D. G. 

